<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文件传输系统 - 安全高效的文件传输解决方案</title>
    <style>
        body {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            color: #333;
            background-color: #f8f9fa;
        }
        .header {
            background: linear-gradient(120deg, #1890ff, #36cfc9);
            color: white;
            text-align: center;
            padding: 4rem 2rem;
            position: relative;
            overflow: hidden;
        }
        .header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255, 255, 255, 0.1)" fill-opacity="1" d="M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
            background-size: cover;
        }
        .header h1 {
            margin: 0;
            font-size: 2.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
            position: relative;
        }
        .header p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 2rem;
        }
        .btn {
            display: inline-block;
            background-color: #1890ff;
            color: white;
            padding: 0.8rem 1.5rem;
            text-decoration: none;
            border-radius: 4px;
            margin-right: 15px;
            transition: all 0.3s;
            font-weight: 500;
            box-shadow: 0 2px 6px rgba(24, 144, 255, 0.2);
        }
        .btn:hover {
            background-color: #40a9ff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
        }
        .btn-secondary {
            background-color: transparent;
            border: 2px solid #1890ff;
            color: #1890ff;
        }
        .btn-secondary:hover {
            background-color: rgba(24, 144, 255, 0.1);
        }
        .feature {
            border-left: 4px solid #1890ff;
            padding-left: 1.5rem;
            margin-bottom: 2.5rem;
            transition: all 0.3s;
        }
        .feature:hover {
            transform: translateX(5px);
            border-left-color: #40a9ff;
        }
        .feature h3 {
            margin-top: 0;
            margin-bottom: 0.5rem;
            color: #1890ff;
        }
        .feature p {
            margin-top: 0;
            color: #666;
        }
        .section {
            margin-bottom: 3rem;
        }
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
            position: relative;
        }
        .section-title h2 {
            display: inline-block;
            margin: 0;
            padding-bottom: 10px;
            font-weight: 500;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 50%;
            height: 3px;
            background-color: #1890ff;
            position: absolute;
            bottom: 0;
            left: 25%;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
        }
        .cta {
            background-color: #f0f7ff;
            border-radius: 8px;
            padding: 3rem;
            text-align: center;
            margin-top: 3rem;
        }
        .cta h2 {
            margin-top: 0;
            color: #1890ff;
        }
        footer {
            text-align: center;
            padding: 2rem;
            background-color: #f1f1f1;
            font-size: 0.9rem;
            color: #666;
        }
        .icon {
            display: inline-block;
            width: 40px;
            height: 40px;
            background-color: #1890ff;
            border-radius: 50%;
            margin-right: 10px;
            position: relative;
        }
        .icon::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 20px;
            height: 20px;
            background-color: white;
            mask-size: contain;
            mask-repeat: no-repeat;
            mask-position: center;
            -webkit-mask-size: contain;
            -webkit-mask-repeat: no-repeat;
            -webkit-mask-position: center;
        }
        .icon-cloud::before {
            mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 10h-1.26A8 8 0 1 0 9 20h9a5 5 0 0 0 0-10z"></path></svg>');
            -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 10h-1.26A8 8 0 1 0 9 20h9a5 5 0 0 0 0-10z"></path></svg>');
        }
    </style>
</head>
<body>
    <div class="header">
        <h1>文件传输系统</h1>
        <p>安全、高效的文件传输解决方案，支持多平台访问，包括安卓、iOS、Windows、macOS和Linux</p>
    </div>
    
    <div class="container">
        <div class="section">
            <div class="section-title">
                <h2>系统功能</h2>
        </div>
        
            <div class="features-grid">
                <div class="feature">
                    <h3>多平台支持</h3>
                    <p>从任何设备访问您的文件 - 安卓、iOS、Windows、macOS或Linux。</p>
                </div>
            
            <div class="feature">
                    <h3>安全文件共享</h3>
                    <p>通过访问码和过期日期安全地共享文件。</p>
            </div>
            
            <div class="feature">
                    <h3>大文件支持</h3>
                    <p>通过分块上传技术，轻松传输大型文件。</p>
            </div>
            
            <div class="feature">
                    <h3>文件管理</h3>
                    <p>轻松组织、搜索和管理您的文件。</p>
            </div>
            
            <div class="feature">
                    <h3>多种文件类型</h3>
                    <p>支持各种文件类型，包括文档、图片、视频、压缩包等。</p>
            </div>
            
            <div class="feature">
                    <h3>实时预览</h3>
                    <p>直接在浏览器中预览文档、图片和多媒体文件。</p>
                </div>
            </div>
        </div>
        
        <div class="cta">
            <h2>开始使用</h2>
            <p>创建账号或登录已有账号，开始上传、管理和共享您的文件。</p>
            
            <a href="register.html" class="btn">立即注册</a>
            <a href="login.html" class="btn btn-secondary">登录</a>
        </div>
    </div>
    
    <footer>
        &copy; 2024 文件传输系统 版权所有
    </footer>
</body>
</html> 